Additives, such as antioxidants and UV stabilizers, can significantly impact the environmental degradation of common polymer-based packaging materials like polyethylene PE and polyethylene terephthalate PET . These additives are incorporated into the polymer matrix to enhance the performance and durability of the packaging materials. However, they can also influence the degradation process, affecting the overall environmental impact of these materials.1. Antioxidants: Antioxidants are added to polymers to prevent or slow down the oxidative degradation caused by exposure to heat, light, or other environmental factors. Oxidative degradation can lead to a loss of mechanical properties, discoloration, and embrittlement of the polymer. By delaying this process, antioxidants can extend the service life of the packaging materials.However, the presence of antioxidants can also slow down the environmental degradation of the polymers. In the case of PE and PET, which are not readily biodegradable, this can lead to a longer persistence of plastic waste in the environment. On the other hand, some antioxidants can potentially leach out of the polymer matrix and cause environmental pollution.2. UV stabilizers: UV stabilizers are added to polymers to protect them from the harmful effects of ultraviolet UV radiation, which can cause photo-oxidation, discoloration, and loss of mechanical properties. UV stabilizers can be classified into two main categories: UV absorbers and Hindered Amine Light Stabilizers HALS .UV absorbers work by absorbing UV radiation and converting it into heat, which is then dissipated within the polymer matrix. This prevents the formation of free radicals and delays the photo-oxidation process. HALS, on the other hand, act as radical scavengers, neutralizing the free radicals generated by UV radiation and preventing the degradation of the polymer.Similar to antioxidants, the presence of UV stabilizers can slow down the environmental degradation of PE and PET, leading to a longer persistence of plastic waste in the environment. Additionally, some UV stabilizers can potentially leach out of the polymer matrix and cause environmental pollution.In summary, additives like antioxidants and UV stabilizers can improve the performance and durability of polymer-based packaging materials like PE and PET. However, they can also slow down their environmental degradation, leading to a longer persistence of plastic waste in the environment and potential pollution due to leaching of the additives. To minimize the environmental impact of these materials, it is essential to develop more sustainable packaging solutions, such as biodegradable polymers, recycling strategies, and eco-friendly additives.